Miracle Gro Sulphate of iron acidifies soil, which allows better growth of ericaceous plants such as Azaleas, Rhododendrons, heathers and magnolias.
It also strengthens plant cell, hardening them for the winter and provides a darker, green colour to foliage.
- Ideal for ericaceous (acid loving) plants
- Prevents and corrects leaf yellowing caused by iron deficiency
- Boosts soil acidity
- Easy to use granules